“压胀松动”增产技术现场试验研究

FIELD TEST RESEARCH ON DILATATION DECONSOLIDATION WELL STIMULATION

较详细地介绍了“压胀松动”增产技术的施工工艺过程和现场施工效果。油井“压胀松动”施工设计中 ,药量的计算及装药延时设计基于油层岩石动态力学参数的测定 ,特别是油层岩石产生压胀的 ζ值的大小。采用理论与实践相结合方法 ,论述了压裂弹体设计、施工中的弹体装配、引爆工艺、施工工艺关系和现场施工的成败 ,并讨论和分析了套管井套管破坏的预防和保护问题。最后对在子长油矿进行的 42 0 7裸眼井和 42 4 2套管井“压胀松动”现场试验的工艺效果和地质效果进行了分析 ,指出该技术是一项极有前途的增产新技术。

This paper detailed the field operation process and application effects of Dilatation Looseness Stimulation for wells. In the operation process design of this technology, the calculation of explosive application and ignition delay is based on the test results of rock matrix dynamic mechanical parameters, especially the ζ value of oil bearing formation when dilatation being produced. A method that combines theory and practice is used to illustrate the relationship among the fracturing explosive body design, installation of the explosive body in use, ignition technology and operation processes. It also gives an approach to evaluate the operation being successful or not. The damage prevention of casing and protection problems are discussed and analyzed. Finally, case studies of well 4207 which is an open-hole and well 4242 which is a cased hole in Zichang lease are provided, the effects of the field test and the geological effect for Dilatation Looseness Stimulation are also analyzed. \;analyzed.Subjectheading Ya